>Organic Electronics and Photovoltaics: Advances in Materials and Devices

Seminar:

Organic Electronics and Photovoltaics: Advances in Materials and Devices

February 15, 2013

Samson Jenekhe, University of Washington

The era of organic and printed electronics is emerging towards the
realization of low cost ubiquitous applications of electronics.
Organic semiconductor-based photovoltaics (OPVs) are also promising for
developing low cost solar energy conversion technologies.
Advances in the design, synthesis, processing, and tuning of the
electronic structure and properties of conjugated polymer semiconductors
are promising major improvements in the performance of organic
electronic devices in these applications.
Towards these ends our group is exploring a molecular and nanoscale
engineering approaches to solution processable and robust, high charge
carrier mobility p-type and n-type polymer semiconductors needed for
developing the next generation high-performance organic electronic
devices, including light-emitting diodes for displays and solid-state
lighting, field-effect transistors, complementary logic circuits, and
low-cost solar cells.
In this talk I will describe our recent investigation of various p-type
and n-type polymer semiconductors, including their solid state
morphology, charge transport, self-assembly of nanostructures, and their
electronic and optical properties.
I will use several examples to illustrate some of our approaches and
recent efforts directed particularly towards thin film transistors and
polymer solar cells.
One example is a novel class of high mobility n-type polymer
semiconductors and related n-channel transistors and complementary
circuits.
Another example includes new small bandgap donor polymers for
constructing highly efficient polymer/fullerene and hybrid
polymer/inorganic nanocrystal solar cells.
To overcome the drawbacks of fullerenes new oligomer and polymer
acceptor materials are also being developed for OPVs.